For this Channel 4 documentary Jane Elliott, a controversial former schoolteacher from Ohio, is recreating the shocking exercise she used forty years ago to teach her nine year-old pupils about prejudice.

Elliott is asking thirty adult British volunteers – men and women of different ages and backgrounds – to experience inequality based on their eye colour to show how susceptible we can all be to bigotry, and what it feels like to be on the other side of arbitrary discrimination.

Does Elliott’s exercise still have something to teach us four decades on and in a different country? Presented by Krishnan Guru-Murthy, the exercise is observed throughout by two expert psychologists, Prof Dominic Abrams and Dr Funké Baffour, who will be unpicking the behaviour on display.